Question

What is the volume of 45 grams of `H_2` gas at STP?

Answer 1

`"Volume" >500*L`. We use the molar volume of an Ideal gas at STP.

Explanation:

It is known that at STP, 1 mol of Ideal gas occupies a volume of `22.4` `L`.

We assume, reasonably. that dihydrogen gas behaves ideally at STP.

Thus `V` `=` `(45*cancelg)/(2*cancelg*cancel(mol^-1)) xx 22.4*L*cancel(mol^-1` `=` `??L`